Picker-motion for looms



(Nvo ModeL) f o. vK1\IOWLT01\Il v PICKER MOTION Pon LooMs. No. 249,951. Patented Nov. 22,1881.

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UNITED STATES PATENT OFFICE.

WILLIAM C. KNOWLTON, OF MANCHESTER, NEW HAMPSHIRE.

PICKER-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 249,951, dated November 22, 1881.

Application filed February 15, 1881. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM C. KNoWLToN, a citizen ot' the United States, residing at Manchester, in the county of Hillsborough and State of New Hampshire, have invented certain new and useful ImprovementsinPicker-Motions for Looms; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification. The present invention relates to that class of picker-motions for looms in which a coiled or other spring is combined with the rocker and the picker-stad' for retracting the latter after it has thrown the shuttle across the lathe or after the pick has been made.

Theinvention consists in the construction and combination of parts ,which will be hereinafter morefully described, and set forth in the claims.

In the drawings, Figure 1 is a front elevation of a picker-motion embodyingmy improvements. Fig. 2 is a vertical cross-section taken through the picker-staff, rocker, and rail. Fig. 3 is a face view of the cover or plate for closing the spring-chamber. Fig. 4 is a sectional view of said plate.

The letter a designates part ot' the frame of a loom.

The customary rail, c, supporting the pickerstatt' and its adjuncts, is connected with the rock-shaft b, which is journaled in the frame a, as is shown in Fig. 1.

The rocker d rests upon the top of the rail c in the customary manner, and is connected therewith by means of the link c, which is pivoted at either end to the rocker and to the rail. The rocker cl is constructed with a chamhered enlargement, j', and from the top of the latter project parallel flanges, or a socketed eXtension, j, which receive the picker stick or staff lr. This picker-stick is secured to the rocker,

or to the socketed extension thereof, by a bolt,

m. The aforesaid chamber, formed in the rocker, receives the cup zc, which has an axial opening,through which passes a stud or bolt, g. The cup @o turns on this stud and incloses a spiral or coiled spring, l, which encircles the hub or central sleeve portion ot' said cup, and has one end attached thereto at the point s, its outer end being secured to the inner wall ot the chamber at the point o. The stud or bolt g has a collar or shoulder, p, whichon one side bears against the inside of the stationary wall of the chamber f, and the end of t'he hub or sleeve portion ot' the spring-inclosin gcuprests against the other side of said collar. The spring-chamberfof the rocker is closed by means of a detachable plate or cover, y, which has a central opening for the passage ot the stud or bolt g. Nuts q r, applied to the screw-threaded ends of said stud or bolt, fasten it and the detachable plate to the rocker, as will be readily understood. A strap, h, passing over the outer periphery of the spring-inclosing cup, and attached thereto by suitable means, extends through an aperture in the lower face of the rocker, and is secured to the rail c by means of a pin or screw, n.

From the construction above described it will readily be observed that effectual provision is made for preventing the rocker from jumping or being pulled olf the rail when the pick is being made.

I am aware that it is not broadly new to combine a spring with the rail, rocker, and picker-staff for retracting the latter after the pick has been made. All devices, however, known to me which employ such a device have not proved entirely satisfactory, because the component parts are liable to breakage or dislocation, and the spring is not protected or inclos'ed, as proposed by me.

A picker-motion constructed according to the present invention is more effective in operation and less liable to get out of order than others heretofore known.

Having thus described my invent-ion, what I claim as new, and desire to secure by Letters Patent, is-

1. In a picker-motion for looms, the combination' of the rocker having a chambered enlargement with open front, the cup fitted in said chamber and inclosing a spiral or coiled spring, the detachable face-plate, the stud or bolt passing through the same, and the springcup,with the rail and the strap secured to thelatter and to the spring-cup and passing through the rocker, as and for the purpose set forth.

IOO

2. In a picker-motion for looms, the oombi- In testimony whereof 1 ax my signature in nation of the rocker having the stud or bolt presence of two Witnesses. with cup inolosng a spiral or coiled spring fitted on said stud or bolt, the rail, the strap eonnect- WILLIAM C' KNOWLTON' ing the latter with the spring-cup, and. the link Witnesses: pivoted at its ends to the rookervand rail, as CHARLES H. BRETMAN, and for the purpose set forth. GEO. C. GILMORE. 

